VAL-446 Improve error handling & reporting around file handling

src/main/java/org/ihtsdo/rvf/core/service/DroolsRulesValidationService.java

@@ -304,7 +304,7 @@ private List<InvalidContent> validateFiles(ValidationRunConfig validationConfig,
 								!uuidAssertionMap.get(UUID.fromString(item.getRuleId())).getGroups().contains("int-authoring"))
 							|| ((uuidAssertionMap.get(UUID.fromString(item.getRuleId())).getGroups().contains("common-authoring") ||
 								uuidAssertionMap.get(UUID.fromString(item.getRuleId())).getGroups().contains("int-authoring"))
-							&& modules.contains(item.getComponent().getModuleId()))).collect(Collectors.toList());
+							&& modules.contains(item.getComponent().getModuleId()))).toList();
 				}
 			}
 
@@ -342,6 +342,7 @@ private List<InvalidContent> checkAgainstWhiteListedItems(List<InvalidContent> i
 	}
 
 	private void extractFiles(ValidationRunConfig validationConfig, Set<String> extractedRF2FilesDirectories, Set<String> previousReleaseDirectories) throws RVFExecutionException, ReleaseImportException, IOException {
+		verifyLocalFile("extracting prospective file", validationConfig.getLocalProspectiveFile());
 		try (InputStream testedReleaseFileStream = new FileInputStream(validationConfig.getLocalProspectiveFile())) {
 			// If the validation is Delta validation, previous snapshot file must be loaded to snapshot files list.
 			if (validationConfig.isRf2DeltaOnly()) {
@@ -364,18 +365,26 @@ private void extractFiles(ValidationRunConfig validationConfig, Set<String> extr
 			if (StringUtils.isBlank(validationConfig.getExtensionDependency()) || !validationConfig.getExtensionDependency().endsWith(EXT_ZIP)) {
 				throw new RVFExecutionException("Drools validation cannot execute when Extension Dependency is empty or not a .zip file: " + validationConfig.getExtensionDependency());
 			}
+			verifyLocalFile("extracting dependency file", validationConfig.getLocalDependencyReleaseFile());
 			try (InputStream dependencyStream = new FileInputStream(validationConfig.getLocalDependencyReleaseFile())) {
 				extractedRF2FilesDirectories.add(new ReleaseImporter().unzipRelease(dependencyStream, ReleaseImporter.ImportType.SNAPSHOT).getAbsolutePath());
 			}
 		}
 
 		if (StringUtils.isNotBlank(validationConfig.getPreviousRelease()) && validationConfig.getPreviousRelease().endsWith(EXT_ZIP)) {
+			verifyLocalFile("extracting previous release file", validationConfig.getLocalPreviousReleaseFile());
 			try (InputStream previousReleaseStream = new FileInputStream(validationConfig.getLocalPreviousReleaseFile())) {
 				previousReleaseDirectories.add(new ReleaseImporter().unzipRelease(previousReleaseStream, ReleaseImporter.ImportType.SNAPSHOT).getAbsolutePath());
 			}
 		}
 	}
 
+	private void verifyLocalFile(String step, File file) throws RVFExecutionException {
+		if (file == null || !file.exists() || !file.canRead()) {
+			throw new RVFExecutionException("Drools validation failure while " + step + " as it is null, not found, or cannot be read.  File name: '" + file + "'");
+		}
+	}
+
 	private UUID parseUUID(String uuid) {
 		try{
 			return UUID.fromString(uuid);

src/main/java/org/ihtsdo/rvf/core/service/MysqlValidationService.java

@@ -1,8 +1,9 @@
 package org.ihtsdo.rvf.core.service;
 
-import org.apache.commons.lang3.exception.ExceptionUtils;
+
 import org.ihtsdo.otf.rest.client.RestClientException;
 import org.ihtsdo.otf.rest.exception.BusinessServiceException;
+import org.ihtsdo.otf.utils.ExceptionUtils;
 import org.ihtsdo.rvf.core.data.model.*;
 import org.ihtsdo.rvf.core.service.config.MysqlExecutionConfig;
 import org.ihtsdo.rvf.core.service.config.ValidationRunConfig;
@@ -76,25 +77,30 @@ public ValidationStatusReport runRF2MysqlValidations(ValidationRunConfig validat
 		}
 
 		String reportStorage = validationConfig.getStorageLocation();
+		String lastItemLoadAttempted = "Item Unknown";
 		try {
 			// prepare release data for testing
+			lastItemLoadAttempted = "Previous Release - " + executionConfig.getPreviousVersion();
 			releaseVersionLoader.loadPreviousVersion(executionConfig);
 			if (releaseVersionLoader.isUnknownVersion(executionConfig.getPreviousVersion())) {
 				statusReport.addFailureMessage("Failed to load previous release " + executionConfig.getPreviousVersion());
 			}
 
 			// load dependency release
 			releaseVersionLoader.loadDependencyVersion(executionConfig);
+			lastItemLoadAttempted = "Dependency Release - " + executionConfig.getExtensionDependencyVersion();
 			if (releaseVersionLoader.isUnknownVersion(executionConfig.getExtensionDependencyVersion())) {
 				statusReport.addFailureMessage("Failed to load dependency release " + executionConfig.getExtensionDependencyVersion());
 			}
 			// load prospective version
+			lastItemLoadAttempted = "Prospective Release - " + executionConfig.getProspectiveVersion();
 			releaseVersionLoader.loadProspectiveVersion(statusReport, executionConfig, validationConfig);
 		} catch (Exception e) {
-			String errorMsg = String.format("Failed to load data into MySql due to %s", ExceptionUtils.getRootCauseMessage(e));
-			LOGGER.error(errorMsg, e);
-			statusReport.addFailureMessage(errorMsg);
-			statusReport.getReportSummary().put(TestType.SQL.name(), errorMsg);
+			String errorMsg = String.format("Failed to load data (%s) into MySql", lastItemLoadAttempted);
+			String errorMsgWithCause = ExceptionUtils.getExceptionCause(errorMsg, e);
+			LOGGER.error(errorMsgWithCause, e);
+			statusReport.addFailureMessage(errorMsgWithCause);
+			statusReport.getReportSummary().put(TestType.SQL.name(), errorMsgWithCause);
 			return statusReport;
 		}
 		if (executionConfig.isExtensionValidation()) {
@@ -138,10 +144,10 @@ private void runExtensionReleaseValidation(ValidationStatusReport statusReport,
 				releaseVersionLoader.combineCurrentExtensionWithDependencySnapshot(executionConfig, validationConfig);
 				this.legacyProspectiveVersions.add(executionConfig.getProspectiveVersion());
 			} catch (BusinessServiceException e) {
-				String msg = String.format("Failed to prepare data for extension testing due to error %s", ExceptionUtils.getRootCauseMessage(e));
-				statusReport.addFailureMessage(msg);
-				LOGGER.error(msg, e);
-				statusReport.getReportSummary().put(TestType.SQL.name(), msg);
+				String errMsg = ExceptionUtils.getExceptionCause("Failed to prepare data for extension testing", e);
+				statusReport.addFailureMessage(errMsg);
+				LOGGER.error(errMsg, e);
+				statusReport.getReportSummary().put(TestType.SQL.name(), errMsg);
 			}
 		}
 		testItems.addAll(runAssertionTests(executionConfig, noneReleaseTypeAssertions, reportStorage, true));
@@ -289,7 +295,7 @@ private void constructTestReport(ValidationStatusReport statusReport, MysqlExecu
 			report.addFailedAssertions(Collections.emptyList());
 			report.addWarningAssertions(Collections.emptyList());
 			report.addPassedAssertions(Collections.emptyList());
-			statusReport.addFailureMessage(String.format("Failed to extract test results caused by %s", ExceptionUtils.getRootCauseMessage(exception)));
+			statusReport.addFailureMessage(ExceptionUtils.getExceptionCause("Failed to extract test results",exception));
 		}
 
 		final long timeEnd = System.currentTimeMillis();

src/main/java/org/ihtsdo/rvf/core/service/ValidationVersionLoader.java

@@ -84,7 +84,7 @@ public void loadPreviousVersion(MysqlExecutionConfig executionConfig) throws Bus
 			String rvfDbSchema = loadRelease(executionConfig.getPreviousVersion());
 			executionConfig.setPreviousVersion(rvfDbSchema);
 		} else {
-			throw new BusinessServiceException("Previous release specified is not found "
+			throw new BusinessServiceException("Previous release specified is not found: "
 					+ executionConfig.getPreviousVersion());
 		}
 	}